Fine domain composite films of polyimide mixtures
US4954578A · kind A · utility
6Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1988 |
| Grant date | Sep 4, 1990 |
| Priority date | — |
| Expiry date | Oct 25, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2379/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Thin films of polyimide having electrical insulation, low thermal expansion, high glass transition temperature, and good adhesion are made by dispersing fine domains of relatively flexible polyimide which is fluorinated in a matrix of relatively rigid polyimide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.